In sequence diagrams, you can create combined fragments to visually
represent constructs, such as options, alternatives, loops, in interactions.
Each type of combined fragment is defined by its operator.
You must have a sequence diagram with lifelines open.
To create a combined fragment, in the
Palette,
click a combined fragment type and complete one of the following steps:
- To include selected lifelines in the combined fragment, click in the interaction
frame and drag the combined fragment across several lifelines without covering
any messages or interaction fragments. In the Add Covered Lifeline window
that lists the crossed lifelines, click OK.
- To include all lifelines in the interaction frame in the combined fragment,
click in the interaction frame without covering any lifelines, message, or
interaction. In the Add Covered Lifeline window, with
all lifelines in the interaction frame selected, click OK.
- To include selected lifelines, messages, and interaction fragments in
the combined fragment, click in the interaction frame and drag the combined
fragment across several lifelines that cover existing messages or interaction
fragments. The covered messages and interaction fragments are displayed in
the first interaction operand of the combined fragment.
Note: You can exclude specific lifelines from the combined
fragment regardless of their order in the interaction frame by clearing them
from selection in the Add Covered Lifeline window.